<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        class Star {
            constructor (uname,age,sex) {
                this.uname = uname;
                this.age = age;
                this.sex = sex;
            }
            sing (song) {
                console.log(`${ this.uname }${ song }`);
            }
        }

        const ldh = new Star('刘德华', '50', '男');
        console.log(ldh);

        const zxy = new Star('张学友', '45', '男');
        console.log(zxy);

        ldh.sing('冰雨');
        ldh.sing('李香兰');
    </script>
</body>
</html>